package com.ly.common.core.Interceptor;

import cn.hutool.core.io.IoUtil;
import cn.hutool.core.util.ObjectUtil;
import com.alibaba.ttl.TransmittableThreadLocal;
import com.ly.common.core.filter.RepeatedlyRequestWrapper;
import com.ly.common.core.utils.SpringUtils;
import com.ly.common.core.utils.StringUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.time.StopWatch;
import org.springframework.http.MediaType;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedReader;

/**
 * web的调用时间统计拦截器 dev环境有效
 *
 * @since 3.3.0
 */
@Slf4j
public class PlusWebInvokeTimeInterceptor implements HandlerInterceptor {

    private final TransmittableThreadLocal<StopWatch> invokeTimeTL = new TransmittableThreadLocal<>();

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
        if (!"prod".equals(SpringUtils.getActiveProfile())) {
            String url = request.getMethod() + " " + request.getRequestURI();
            // 打印请求参数
            if (isJsonRequest(request)) {
                String jsonParam = "";
                if (request instanceof RepeatedlyRequestWrapper) {
                    BufferedReader reader = request.getReader();
                    jsonParam = IoUtil.read(reader);
                }
                log.info("@开始请求 => URL[{}],参数类型[json],参数:[{}]", url, jsonParam);
            } else {
                // 静态资源不做处理
                // Map<String, String[]> parameterMap = request.getParameterMap();
                // if (MapUtil.isNotEmpty(parameterMap)) {
                //     String parameters = JsonUtils.toJsonString(parameterMap);
                //     log.debug("@开始请求 => URL[{}],参数类型[param],参数:[{}]", url, parameters);
                // } else {
                //     log.debug("@开始请求 => URL[{}],无参数", url);
                // }
            }
            StopWatch stopWatch = new StopWatch();
            invokeTimeTL.set(stopWatch);
            stopWatch.start();
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
                           ModelAndView modelAndView) throws Exception {
        if (ObjectUtil.isNotNull(modelAndView)
                && ObjectUtil.isNotNull(modelAndView.getModel())
                && isJsonRequest(request)) {
            String result = (String) modelAndView.getModel().get("result");
            log.debug("@响应结果为 => [{}]", result);
        }
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
            throws Exception {
        if (!"prod".equals(SpringUtils.getActiveProfile()) && isJsonRequest(request)) {
            StopWatch stopWatch = invokeTimeTL.get();
            stopWatch.stop();
            log.debug("@结束请求 => URL[{}],耗时:[{}]毫秒", request.getMethod() + " " + request.getRequestURI(),
                    stopWatch.getTime());
            invokeTimeTL.remove();
        }
    }

    /**
     * 判断本次请求的数据类型是否为json
     *
     * @param request request
     * @return boolean
     */
    private boolean isJsonRequest(HttpServletRequest request) {
        String contentType = request.getContentType();
        if (contentType != null) {
            return StringUtils.startsWithIgnoreCase(contentType, MediaType.APPLICATION_JSON_VALUE);
        }
        return false;
    }
}
